With a design reminiscent of a nautical instrument, the Portugieser Chronograph evolved into one of IWC's most popular models.

Overview
Reference: IW371615
Dial Color: Green
Case: Stainless steel
Strap: Black alligator leather strap
Diameter: 41 mm
Movement: Automatic, self-winding, IWC-manufactured movement

Features
Small hacking seconds
Sapphire glass, convex, antireflective coating on both sides
Chronograph function with minutes and seconds

Case
Strap width: 20 mm
Buckle width: 18 mm
Case: Stainless steel
Diameter: 41 mm
Height: 13 mm
Water Resistance: 3 Bar
Back case: With synthetic sapphire crystal

Movement
Calibre: 69355
Movement type: Automatic, self-winding
IWC-manufactured movement: Yes
Power Reserve: 46 hours
Frequency: 28800 Vph (4 Hz)
Components: 205
Jewels: 27
Decoration: Côtes de Genève, Perlage